Power Supply Function
4. Set the warm-up time Warm-up, protection limit Level and delay time Delay
in sequence, and then press [Enter] to confirm.
The VFD screen returns to the Protect menu and the UCP setting (take 10S,
0.1A, 1S as an example) is displayed as follows:
PROTECT
4.UCP 10S, 0.1A, 1.000S
4.5.5 Set Under-Voltage Protection (UVP)
Users can enable the UVP function and set the instrument warm-up time
Warm-up, protection limit Level and protection delay time Delay. When the
voltage (i.e., the Meter value) is lower than this protection limit and the warm-up
time, delay time are exceeded, the power supply will enter the UVP state.
Possible Cause
Many reasons can cause UVP, the details are as follows:
• The set protection limit Level is greater than the voltage Meter value.
• The external (AC input) inputs a lower voltage.
• The power supply outputs a low voltage due to a fault.
How to Set
The operation steps to set UVP are as follows.
1. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to en-
ter the protection menu.
2. Press the up/down key or rotate the knob to select 5. UVP (Off) and press
[Enter].
3. Press the left/right key or rotate the knob to select On and press [Enter] to
enter the setting interface.
4. Set the warm-up time Warm-up, protection limit Level and delay time Delay
in sequence, and then press [Enter] to confirm.
The VFD screen returns to the Protect menu and the UVP setting (take 10S,
1V, 1S as an example) is displayed as follows:
PROTECT
5.UVP 10S, 1V, 1.000S
Copyright © Itech Electronic Co., Ltd.
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